North Carolina marine algae. VII. New species of Hypnea and Petroglossum (Rhodophyta, Gigartinales) and additional records of other Rhodophyta

Schneider, Craig W.; Searles, Richard B.

doi:10.2216/i0031-8884-15-1-51.1

Cited by 23 publications

(73 citation statements)

References 4 publications

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“…They discovered that Joly's Brazilian material did in fact have 5-7 tetrasporangia formed in unbranched terminal chains in scattered nemathecia, similar to what Schneider & Searles (1976) had reported for North Carolinian plants. Dalen & Saunders (2007) also noted that many of the sporangia were immature at the time Joly collected the plants, allowing for the discrepancy with Schneider & Searles' (1976) account of mature tetrasporangia in plants from North Carolina. Dalen & Saunders (2007) concluded that the Brazilian and North Carolinian material represented the same species.…”

Section: Introductionsupporting

confidence: 72%

“…4). Similarly, the North Carolina plants produced tetrasporangia in nemathecia, but here they were formed in terminal chains of up to ten tetrasporangia (Schneider & Searles, 1976). Because the North Carolina plants Rhodymeniales based upon their observations of archival Brazilian and North Carolinian material.…”

Section: Introductionmentioning

confidence: 89%

“…Joly, a species he described without the benefit of having observed gametangia. Two decades later, Schneider & Searles (1976) reported this species in deep water (50 m) off North Carolina, USA, and they also collected plants with only tetrasporangia. Schneider & Searles (1976), however, pointed out one substantial difference between the Brazil and USA collections.…”

Section: Introductionmentioning

confidence: 99%

“…Two decades later, Schneider & Searles (1976) reported this species in deep water (50 m) off North Carolina, USA, and they also collected plants with only tetrasporangia. Schneider & Searles (1976), however, pointed out one substantial difference between the Brazil and USA collections. Joly's plants were reported to produce nemathecia as proliferations of the outer cortex, with tetrasporangia appearing singly and terminally on elevated nemathecial filaments (Joly, 1957, pl.…”

Section: Introductionmentioning

confidence: 99%

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A new genus and species from the North Atlantic,Archestenogramma profundum(Phyllophoraceae, Rhodophyta), with taxonomic resolution of the orphanedLeptofauchea brasiliensis

Schneider

Chengsupanimit

Saunders

2011

European Journal of Phycology

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Section: Introductionsupporting

confidence: 72%

Section: Introductionmentioning

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A new genus and species from the North Atlantic,Archestenogramma profundum(Phyllophoraceae, Rhodophyta), with taxonomic resolution of the orphanedLeptofauchea brasiliensis

Schneider

Chengsupanimit

Saunders

2011

European Journal of Phycology

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“…The most extensive study of deep-water macroalgae in the western Atlantic has been made along the continental shelf of North Carolina (Schneider, 1974(Schneider, , 1975a(Schneider, , b, 1976(Schneider, , 1984Schneider & Reading, in press;Schneider & Searles, I973, 1975, 1976Searles, 1972Searles, , 1984aSeafles & Schneider, 1978, 1980 and South Carolina (Wiseman & Schneider, 1977;Schneider & Eiseman, 1979;Blair & Hall, 1981). Yet despite the tremendous activity on the Carolina flora, relatively scant attention has been paid to macroalgae off the extensive eastern coast of Florida, with investigations having concentrated on relatively shallow-water communities (e.g.…”

Section: Introductionmentioning

confidence: 99%

The deep-water macroalgal community of the East Florida continental shelf (USA)

Hanisak

Blair

1988

Helgolander Meeresunters

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The deep-water macroalgal community of the continental shelf off the east coast of Florida was sampled by lock-out divers from two research submersibles as part of the most detailed year-round study of a macroalgal community extending below routine SCUBA depths. A total of 208 taxa (excluding crustose corallines) were recorded; of these, 42 (20.2 %), 19 (9.1%), and 147 (70.7 %) belonged to the Chlorophyta, Phaeophyta, and Rhodophyta, respectively. Taxonomic diversity was maximal during late spring and summer and minimal during late fall and winter. The number of reproductive taxa closely followed the number of taxa present; when reproductive frequency was expressed as a percentage of the species present during each month, two peaks (January and August) were observed. Most perennial species had considerable depth ranges, with the greatest number of taxa observed from 31 to 40 m in depth. Although most of the taxa present also grow in shallow water (i.e. <10 m), there were some species whose distribution is hmited to deeper water. The latter are strongly dominated by rhodophytes. This community has a strong tropical affinity, but over half the taxa occur in warm-temperate areas. Forty-two new records (20% of the taxa identified) for Florida were listed; this includes 15 taxa whicl~ previously had been considered distributional disjuncts in this area. The phaeophyte Halopteris filicina is a new addition to the flora of the western Atlantic. Although more studies are needed, it appears that the deep-water flora may be relatively continuous over a large portion of the tropical and subtropical western North Atlantic. The traditional practice of considering Cape Canaveral as a biogeographical boundary may only be appropriate for shallow water. This study demonstrates the need for additional floristic work on macroalgal communities, especially from deep water, before more detailed biogeographical analyses can be performed and suggests that deep-water species could be important in experimental approaches to macroalgal biogeography.

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Systematics of Hypnea asiatica sp. nov. (Hypneaceae, Rhodophyta) based on morphology and nrDNA SSU, plastid rbcL, and mitochondrial cox1

Geraldino

Yang

Kim³

et al. 2009

TAXON

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Hypnea is an economically and ecologically important red alga including about 53 species worldwide. Here, we describe H. asiatica sp. nov. from Korea, Japan, and Taiwan. Specimens of this species from the northwestern Pacific have often been assigned to H. charoides. Hypnea asiatica is distinguished by percurrent main axes, branches with abruptly curved adaxial branchlets, and the presence of lenticular thickening in the walls of medullary cells. It is abundant in wave‐exposed sites from summer through fall and produces tetrasporangial sori in fall. We analyzed three genes from three different genomes: nuclear SSU rDNA from 27 specimens, plastid rbcL from 51 specimens, and mitochondrial cox1 from 41 specimens, including putative relatives and H. charoides from Australia. All analyzed DNA datasets produced congruent trees in which H. asiatica was always separated from H. charoides. Network analysis of cox1 haplotypes indicated geographic structuring across the species distribution range. Although Hypnea was found to be monophyletic, the distant relationship between H. asiatica and the other species raises questions about divergence pathways within the genus.

show abstract

North Carolina marine algae. VII. New species of Hypnea and Petroglossum (Rhodophyta, Gigartinales) and additional records of other Rhodophyta

Cited by 23 publications

References 4 publications

A new genus and species from the North Atlantic,Archestenogramma profundum(Phyllophoraceae, Rhodophyta), with taxonomic resolution of the orphanedLeptofauchea brasiliensis

A new genus and species from the North Atlantic,Archestenogramma profundum(Phyllophoraceae, Rhodophyta), with taxonomic resolution of the orphanedLeptofauchea brasiliensis

The deep-water macroalgal community of the East Florida continental shelf (USA)

Systematics of Hypnea asiatica sp. nov. (Hypneaceae, Rhodophyta) based on morphology and nrDNA SSU, plastid rbcL, and mitochondrial cox1

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